\[ y''(x)=\frac {(a+b) y'(x)}{x^2}-\frac {y(x) (x (a+b)+a b)}{x^4} \] ✓ Mathematica : cpu = 0.082218 (sec), leaf count = 37
\[\left \{\left \{y(x)\to \frac {c_2 x e^{-\frac {a}{x}}}{a-b}+c_1 x e^{-\frac {b}{x}}\right \}\right \}\] ✓ Maple : cpu = 0.05 (sec), leaf count = 25
\[y \relax (x ) = x \left ({\mathrm e}^{-\frac {b}{x}} c_{2}+{\mathrm e}^{-\frac {a}{x}} c_{1}\right )\]